Merge pull request #519 from NQNStudios:sounds

* Changed shop purchase sound effects where Yum! definitely didn't fit. For alchemy, mage spells, and priest spells, I made the sound the same as the sound when you perform those actions. I figure this actually makes sense because the teacher would show you how to do the thing.
* For skill training, I made the sound be the same as leveling up. I think this makes sense.
* When something is too heavy to pick up, the "Argh!" labeled as 'Action Failure' in the editor sound picker makes a lot of sense--you tried to pick it up and were frustrated.
* I changed beep() so every platform just plays sound effect 1, the one labeled "low beep" [here](http://openboe.com/docs/editor/appendix/Sounds.html) that's labeled "Cancel target lock" in the editor picker. I think this reasonable.
* Removed `ding()` which was an unused alias for `beep()`

src/tools/winutil.linux.cpp

@@ -16,6 +16,8 @@
 extern sf::RenderWindow mainPtr;
 extern void showError(std::string str1, std::string str2, cDialog* parent = nullptr);
 
+extern void play_sound(snd_num_t which, sf::Time delay = sf::Time());
+
 // TODO: I'm sure there's a better way to do this (maybe one that's keyboard layout agnostic)
 // The proper way would involve use of the TextEntered event
 char keyToChar(sf::Keyboard::Key key, bool isShift) {
@@ -225,6 +227,7 @@ std::unique_ptr<sf::Image> get_clipboard_img() {
 }
 
 void beep() {
+	play_sound(1);
 }
 
 void launchURL(std::string url) {